| // 更新： | |
| // 05.27: 1、保证回调执行顺序：error > ready > load；2、回调函数this指向img本身 | |
| // 04-02: 1、增加图片完全加载后的回调 2、提高性能 | |
| /** | |
| * 图片头数据加载就绪事件 - 更快获取图片尺寸 | |
| * @version 2011.05.27 | |
| * @author TangBin（PS:我不是作者，我只是代码的搬运工） | |
| * @see http://www.planeart.cn/?p=1121 | |
| * @param {String} 图片路径 |
| # Set variables in .bashrc file | |
| # don't forget to change your path correctly! | |
| export GOPATH=$HOME/golang | |
| export GOROOT=/usr/local/opt/go/libexec | |
| export PATH=$PATH:$GOPATH/bin | |
| export PATH=$PATH:$GOROOT/bin |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
| :root { | |
| --ease-in-quad: cubic-bezier(.55, .085, .68, .53); | |
| --ease-in-cubic: cubic-bezier(.550, .055, .675, .19); | |
| --ease-in-quart: cubic-bezier(.895, .03, .685, .22); | |
| --ease-in-quint: cubic-bezier(.755, .05, .855, .06); | |
| --ease-in-expo: cubic-bezier(.95, .05, .795, .035); | |
| --ease-in-circ: cubic-bezier(.6, .04, .98, .335); | |
| --ease-out-quad: cubic-bezier(.25, .46, .45, .94); | |
| --ease-out-cubic: cubic-bezier(.215, .61, .355, 1); |
| import provinces from 'china-division/dist/provinces.json'; | |
| import cities from 'china-division/dist/cities.json'; | |
| import areas from 'china-division/dist/areas.json'; | |
| areas.forEach((area) => { | |
| const matchCity = cities.filter(city => city.code === area.cityCode)[0]; | |
| if (matchCity) { | |
| matchCity.children = matchCity.children || []; | |
| matchCity.children.push({ | |
| label: area.name, |
| /** | |
| This is an ECMA-404 compliant JSON parser written in pure JS, with nice error | |
| reporting. It's not super useful since it's ridiculously slow compared to | |
| `JSON.parse()`, but I had fun writing it. | |
| ISC License | |
| Copyright (c) 2019 Ryan Grove <[email protected]> | |
| Permission to use, copy, modify, and/or distribute this software for any purpose |